The extra 40 lines are all tied to ground. The cable was constructed from 10 pieces of Cat5e with one line from each twisted pair going to ground. The construction is as tedious as it sounds and ...

See twisted pair. Cat Type of Bandwidth Data # Cable (MHz) Rate 8 ScTP/STP 2000 MHz ... STP 250 MHz 10 Gbps 5e UTP/ScTP/STP 100 MHz 1 Gbps 5 UTP/ScTP/STP 100 MHz 1 Gbps 4 UTP/ScTP/STP 20 MHz ...

and Cat 5 twisted pair up to 700 ft. HD-TVI also supports IP cameras. A proprietary standard for 720p and 1080p video, HD-CVI also supports IP cameras in certain configurations with cable lengths ...